CN101146317A - Resource allocation and control signaling transmission method - Google Patents

Abstract

The invention discloses a resource allocation and control signaling transmission method, that is, the base station divides its system bandwidth into relatively small sub-bandwidth groups, and divides the physical resources to be allocated into the same groups as above, and then can divide the different The user equipment terminal is allocated within the sub-bandwidth group resource blocks of the above-mentioned one or more groups, and the base station assigns the resource allocation information of the user equipment allocated by the resource allocation method proposed in the present invention to the user equipment through the physical resource allocation control signaling proposed in the present invention transmitted to the user equipment so that the said user equipment can recover the information transmitted within its said allocated resources.

Description

Resource allocation and control signaling transmission method

technical field

The present invention relates to a wireless communication system, and more specifically, to a resource allocation and control signaling transmission method.

Background technique

3GPP is a standardization organization for formulating wideband code division multiple access (WCDMA) technical specifications, and has released various versions of technical specifications related to wireless access networks and core networks. The above wideband code division multiple access (WCDMA) system is based on orthogonal spread spectrum codes to allow multiple users to simultaneously transmit system and user information within a 5MHz bandwidth. The data rate is 2Mbps; since the above-mentioned maximum data transmission rate still cannot meet the increasingly diverse business transmission requirements, the 3GPP standardization organization subsequently separately based the high-speed downlink packet on the downlink from the base station (BS) to the user equipment (UE) Access (HSDPA) and the uplink from the user equipment (UE) to the base station (BS) based on technologies such as High Speed Uplink Packet Access (HSUPA) to enhance the uplink and downlink of the Wideband Code Division Multiple Access (WCDMA) system Transmission capacity, so that in theory the maximum peak rates of the uplink and downlink bearer services are about 5.76Mbps and 14Mbps respectively; due to the transmission capability of the enhanced Wideband Code Division Multiple Access (WCDMA) system is still not able to meet the high Due to the business requirements of transmission bandwidth, it is necessary to introduce new wireless transmission technology and network architecture to evolve the above-mentioned Wideband Code Division Multiple Access (WCDMA) system, which is why 3GPP is applying Orthogonal Frequency Division Multiplexing (OFDM) Long Term Evolution (LTE) Technical Specifications for Division Multiple Access (WCDMA) systems.

In order to better describe the technology of the present invention, it is necessary to briefly explain the basic principle of Orthogonal Frequency Division Multiplexing (OFDM) technology; OFDM is a special multi-carrier modulation (MCM) transmission technology, which does not adopt traditional band-pass Filters are used to separate different carrier spectrums, but the system and user information are sent after modulation by multiple orthogonal carriers with overlapping spectra; the above-mentioned orthogonal carriers with overlapping spectra are called OFDM sub-channels; in traditional multi-carrier modulation In the (MCM) communication system, the entire system frequency band is divided into multiple non-overlapping sub-channels, and each sub-channel is modulated by an independent source symbol, that is, S sub-channels are frequency-division multiplexed; due to the traditional multi-carrier ( MCM) requires a certain guard band interval between the multiplexed carrier frequencies, so that the transmitted information can be restored through the filter at the receiving end. Although this avoids mutual interference between different sub-channels, it increases the number of different carriers. The frequency guard bands result in relatively low spectrum utilization.

The particularity of the above-mentioned OFDM is that it allows the frequencies of the carriers to overlap and be orthogonal to each other. By using the discrete Fourier (DFT) or fast Fourier (FFT) transform based on carrier frequency orthogonality, the above-mentioned orthogonal sub-channel technology can be realized. There is no spectrum component of other carriers at the center frequency of each carrier, which can save 50% of the channel bandwidth. As mentioned above, OFDM technology is no longer realized by many band-pass filters, but directly implements discrete Fourier (DFT) transform on the signal, which is a distinctive feature of OFDM that is different from other systems. The high data rate of OFDM is related to the number of subcarriers. Increasing the number of subcarriers can increase the data transmission rate. It is worth noting that limited by many physical factors such as oscillator phase noise, OFDM cannot have infinite subcarriers. quantity. In addition, OFDM can have different modulation methods for each frequency band, which is suitable for communication systems with high flexibility and high spectrum utilization.

The above-mentioned 3GPP defines two basic transmission modes in the wireless transmission scheme of the Long Term Evolution (LTE) system based on Orthogonal Frequency Division Multiplexing (OFDM) technology, namely Localized transmission mode and Distributed transmission mode. The local transmission mode in the present invention means that the base station assigns the user equipment to transmit data on continuous sub-carriers in a local sub-frequency band according to the quality of the wireless transmission channel between the base station and the user equipment, so that adaptive coding modulation and frequency scheduling can be used to obtain better Large transmission gain; the distributed transmission mode described in the present invention refers to that the base station assigns the user equipment (UE) to transmit data on discontinuous subcarriers in a local or entire frequency band according to the quality of the wireless transmission channel between the base station and the user equipment, thereby realizing Obtain frequency diversity gain in the case of fast channel changes.

Physical resource allocation is one of the key technologies discussed in the 3GPP long-term evolution (LTE) system wireless transmission scheme based on Orthogonal Frequency Division Multiplexing (OFDM) technology. How information bits are mapped to OFDM time-frequency symbol physical resources. Each physical resource block (PRB) is composed of M consecutive subcarriers in N consecutive OFDM symbols; The load requirements should also consider the frequency characteristics of the transmission channel and other requirements. Based on the above considerations, the above-mentioned 3GPP based on Orthogonal Frequency Division Multiplexing (OFDM) technology in the long-term evolution (LTE) system wireless transmission scheme. The size of the basic physical resource block SPRB It is tentatively set to M×N, where M is the number of subcarriers, which can take a value of 25, and N can take a value of the number of OFDM symbols in each subframe. Based on the above description, Table 1 gives the above 3 GPP based on positive 1.25MHz, 2.5MHz, 5.0MHz, 10.0MHz, 15.0MHz, and 20.0MHz and other system transmission bandwidths (B) defined in the long-term evolution (LTE) system wireless transmission scheme of OFDM technology Physical resource block bandwidth and number of physical resource blocks.

Table 1: The physical resource block bandwidth and the number of physical resource blocks corresponding to different bandwidths in the wireless transmission scheme of the LTE system

Bandwidth (MHz) 1.25 2.5 5.0 10.0 15.0 20.0 Physical resource block bandwidth (KHz) 375 375 375 375 375 375 Number of available physical resource blocks 3 6 12 twenty four 36 48

It should be noted that the value of the number of consecutive subcarriers M can be changed based on the research results of Interference Coordination (Interference Coordination) of Orthogonal Frequency Division Multiplexing (OFDM) transmission, for example, M can also take the value of 10, 12, 15 or other values .

In order to illustrate the present invention, it is necessary to further describe the concept of virtual resource blocks defined in the 3GPP technical report TR25.814, which has the following two basic characteristics, namely size and type, wherein the size is measured according to time-frequency resources , the type refers to localized (Localized) or distributed (Distributed) mode; as for the basic principle of mapping virtual resource blocks to physical resource blocks is that localized virtual resource blocks are mapped to physical resources in a localized manner limited to some physical resources The distributed virtual resource blocks are mapped to physical resource blocks in a decentralized manner within some or all of the physical resources. However, the detailed principle of mapping virtual resource blocks to physical resource blocks needs to be further defined. In addition, localized transmission and distributed transmission are frequency division multiplexed (FDM) within each subframe.

Just as the two features of the virtual resource block described above in the present invention, the size of the localized virtual resource block is represented as S _VL , the size of the distributed virtual resource block is represented as S _VD , and the size of the physical resource block is represented as S _PRB ; It is worth noting that the size of all localized virtual resource blocks is the same, while the size S _VD of distributed virtual resource blocks can be different from the size of localized virtual resource blocks; however, the difference between S _PRB , S _VL and S _VD The relationship between them needs to be further defined.

It should be noted that after the above virtual resource blocks are mapped to physical resource blocks, the entire transmission bandwidth is a combination of local transmission and distributed transmission, which means that each physical resource block is either used for local transmission or distributed transmission. Transmission, local resources and distributed resources will not be multiplexed into a single physical resource block; in particular, it should be noted that multiple virtual resources in distributed transmission mode can be multiplexed into the same distributed transmission physical resource block; the above local The regular and distributed resource block multiplexing structure can be semi-statically changed based on multiple subframes, or dynamically changed based on each subframe. The structure of the above-mentioned localized and distributed resource multiplexing is determined by the network, and is notified to the user terminal by the above-mentioned network through a certain signaling method; the above-mentioned signaling notification method can have multiple solutions, one of which is the most direct The way is to use the bit-mapping method, that is, the total number of physical resource blocks of a certain system bandwidth is expressed as a variable with a length of 1 bit, and each bit is expressed as "0" or "1" respectively indicating that each physical resource block is For distributed transmission or localized transmission type, the sequence from left to right is the 0th bit, the 1st bit, ..., the l-1th bit, where the i-th bit of the sequence represents the i-th physical resource block Mapping type (i=0, 1, 2, . The physical resource block is used for localized transmission. It should be noted that the bit mapping method is used to indicate the multiplexing of localized and distributed resources, and its bit overhead is proportional to the number of physical resource blocks.

In order to reduce signaling bit overhead, Ericsson proposed a calculation-based method to indicate multiplexing of localized and distributed resource blocks in the technical reports R1-060095 and R1-060096 submitted to 3GPP. The basic idea is that the number of distributed virtual resource blocks in the total physical resource blocks of a certain system bandwidth is known, and the position of the physical resource blocks occupied by distributed transmission can be calculated according to the defined mapping formula, and the rest of the physical resource blocks are used for Transmission of localized virtual resource blocks. Therefore, the base station can calculate the physical resource block positions for distributed transmission and localized transmission according to the mapping formula defined above, so as to use these physical resource blocks to perform distributed or localized transmission of data. In order for the user terminal to calculate the position where the distributed virtual resource block is mapped to the physical resource block, the base station needs to send the number of distributed virtual resource blocks, so that each user terminal can According to the defined mapping formula, the position where the distributed virtual resource block is mapped to the physical resource block and the position where the localized virtual resource block is mapped to the physical resource block are calculated, and the distributed transmission and the localized transmission are performed in the above physical resource block data is received.

In order to illustrate the existing problems and the content of the present invention in the technical reports R1-060095 and R1-060096 submitted to 3GPP by the above-mentioned Ericsson (Ericsson) company, it is necessary to briefly describe Ericsson (Ericsson) company with reference to Fig. 1 Technical methods proposed in technical reports R1-060095 and R1-060096 submitted to 3GPP.

需要说明的是上述计算整数C的运算符号表示整数取下界。The core idea of the technical solutions proposed by Ericsson in the technical reports R1-060095 and R1-060096 submitted to 3GPP will be firstly described below, and then the above technical solutions will be briefly and further described with reference to FIG. 1 . First, N _DVRB is used to represent the number of distributed virtual resource blocks, N _LVRB is used to represent the number of localized virtual resource blocks, and N _PRB is used to represent the number of physical resource blocks. The above-mentioned method proposed by Ericsson is as follows: (1) Each distributed The formula virtual resource block is divided into N _DVRB parts P _{i, j} that almost include the same number of subcarriers, wherein the variable i represents the resource block number and the variable j represents the part number in each of the above-mentioned distributed virtual resource blocks; (2) each of the above-mentioned Part of P _{i, j} in distributed virtual resource blocks is mapped to physical resources after (i+j) modulo N _DVRB operation; (3) Assume that N _PRB physical resource blocks are numbered as 0, 1, ..., N _PRB-1 , where the number of N _DVRB physical resource blocks allocated for distributed transmission is i×C, where i takes the value of 0, 1, ..., N _DVRB -1, an integer

It should be noted that the above operation symbol for calculating the integer C indicates that the lower bound of the integer is taken.

能够计算得到，即C是数值11除以2后取整数界后为数值5，则上述三个(N_PRB为3)物理资源块的编号分别是0(计算过程为i×C＝0×5)、5(计算过程为i×C＝1×5)、以及10(计算过程为i×C＝2×5)，根据上述所描述的每个分布式虚拟资源块(120、130、140)中部分P_i，j(121、122、123、131、132、133、141、142、和143)映射到经(i+j)模N_DVRB运算后的物理资源(100、105、和110)，可以知道上述三个(N_DVRB为3)虚拟资源块(120、130、140)分别根据上述方法划分为几个部分P_i，j(121、122、123、131、132、133、141、142、和143)，并且映射到上述三个(N_DVRB为3)物理资源块的编号分别是0(100)、5(105)、以及10(110)中，即分布式虚拟资源120分配到物理资源块(100、105、和110)，分布式虚拟资源130分配到物理资源块(100、105、和110)，以及分布式虚拟资源140分配到物理资源块(100、105、和110)，有必要说明的是上述三个(N_DVRB为3)分布式虚拟资源(120、130、140)都分配到上述三个(N_PRB为3)物理资源块(100、105、和110)之中，其分别占有不同的物理资源块的不同部分的子载波，藉此能够达到上述所分配的分布式虚拟资源(120、130、140)在频率域得到较大的频率分集增益。Further describe above-mentioned technical scheme with reference to Fig. 1, just as above-mentioned 3GPP is based on Orthogonal Frequency Division Multiplexing (OFDM) technology long-term evolution (LTE) system wireless transmission scheme system transmission bandwidth (B) can be 1.25MHz, 2.5MHz , 5.0MHz, 10.0MHz, 15.0MHz, and 20.0MHz, etc., here it is assumed that the system transmission bandwidth (B) is 5.0MHz, according to the above Table 1, it can be known that the number of available physical resource blocks N _PRB is 12, and in Figure 1, The resource numbers are 0 to 11 (the corresponding icon numbers are 100 to 111), and in addition, the value of N _DVRB is 3, indicating that there are three user equipments allocated as distributed virtual resources (the corresponding icon numbers are 120, 130, and 140 ), according to the core ideas of the technical solutions proposed by Ericsson in the technical reports R1-060095 and R1-060096 submitted to 3GPP, the above three distributed virtual resources (the corresponding icon numbers are 120, 130 , 140), each virtual resource (120, 130, or 140) will be approximately divided into three (N _DVRB is 3) parts P _{i, j} (corresponding icon numbers are respectively 121, 122, 123 _.

It can be calculated, that is, C is the value 11 divided by 2 and then rounded to an integer value 5, then the numbers of the above three (N _PRB is 3) physical resource blocks are respectively 0 (the calculation process is i×C=0×5 ), 5 (the calculation process is i×C=1×5), and 10 (the calculation process is i×C=2×5), according to each distributed virtual resource block (120, 130, 140) described above The middle part P _{i, j} (121, 122, 123, 131, 132, 133, 141, 142, and 143) is mapped to the physical resource (100, 105, and 110) after (i+j) modulo N _DVRB operation , it can be known that the above three (N _DVRB is 3) virtual resource blocks (120, 130, 140) are divided into several parts P _{i, j} (121, 122, 123, 131, 132, 133, 141, 142, and 143), and are mapped to the above three (N _DVRB is 3) physical resource block numbers are 0 (100), 5 (105), and 10 (110), that is, the distributed virtual resource 120 is allocated to Physical resource blocks (100, 105, and 110), distributed virtual resources 130 are allocated to physical resource blocks (100, 105, and 110), and distributed virtual resources 140 are allocated to physical resource blocks (100, 105, and 110) , it is necessary to note that the above three (N _DVRB is 3) distributed virtual resources (120, 130, 140) are all allocated to the above three (N _PRB is 3) physical resource blocks (100, 105, and 110) Among them, they respectively occupy different subcarriers of different physical resource blocks, so that the above-mentioned distributed virtual resources (120, 130, 140) allocated above can obtain greater frequency diversity gain in the frequency domain.

The technical solutions proposed by the above-mentioned Ericsson (Ericsson) company in the technical reports R1-060095 and R1-060096 submitted to 3GPP are described above in conjunction with accompanying drawing 1. There are some problems in the above-mentioned technical solutions through analysis: as mentioned above, the orthogonal frequency division The long-term evolution (LTE) system wireless transmission scheme of multiplexing (OFDM) technology defines various system transmission bandwidths (B) such as 1.25MHz, 2.5MHz, 5.0MHz, 10.0MHz, 15.0MHz, and 20.0MHz, and their corresponding available The number of physical resource blocks is 3, 6, 12, 24, 36, and 48, and the size S _PRB of each basic physical resource block is tentatively M×N, where M is the number of subcarriers and can be 25, N can be the number of OFDM symbols in each subframe; in addition, each distributed virtual A resource block (which is about 25 subcarriers in size) is divided into N _DVRB parts P _i,j comprising almost the same number of subcarriers, where the variable i represents the resource block number and the variable j represents the part in each of the above distributed virtual resource blocks Numbering; in fact, for the case where the number N _DVRB of distributed virtual resources in the entire physical resource exceeds 25, each of the above-mentioned distributed virtual resource blocks (its size is about 25 subcarriers) is divided into nearly the same number of subcarriers N _DVRB part P _{i, j} will have a problem, that is, in the technical solutions proposed in the above-mentioned 3GPP technical reports R1-060095 and R1-060096, the numerator is smaller than the denominator and the resulting value is a decimal instead of an integer. This situation may cause ( The 15.0MHz and 20.0MHz system transmission bandwidth (B) in the LTE) system wireless transmission scheme cannot work effectively, because the corresponding available physical resource blocks are 36 and 48 respectively and the number of distributed virtual resources N _DVRB exceeds 25 working condition. Therefore, the present invention proposes a resource allocation method to solve the problems existing in the above-mentioned prior art solutions.

Contents of the invention

To solve the above problems, the purpose of the present invention is to provide a method for resource allocation and control signaling transmission.

To achieve the above object, a method for resource allocation and resource allocation control information transmission includes the following steps:

(a) dividing the entire system transmission bandwidth B of the base station into G integer groups according to the bandwidth B _g ;

(b) Divide all distributed virtual resources into N _DVRBs and divide them into G groups, and obtain the respective distributed virtual resources S _g in each group;

(c) within each distributed resource group, divide each distributed virtual resource block for each distributed resource with the number of subcarriers M into different virtual resource blocks P _{y, j , g} ;

(d) The different equally divided parts of each distributed virtual resource within each group are respectively calculated at the number of subcarriers L _g at each virtual distributed resource grouping interval;

(e) determining the resource number k corresponding to the virtual distributed resource block N _DVRB within the number N _PRB of physical resource blocks;

(f) Map the equally divided part P _{y, j, g} divided by each virtual distributed resource in each virtual distributed resource group to (y+j) modulo S _g operation in each physical group After the corresponding physical resource number r;

(g) The base station transmits the resource allocation information of the user equipment to the user equipment through the physical resource allocation control signaling. After receiving the above resource allocation control signaling information, the user equipment can obtain the physical resources allocated by the base station, and from the above The resource restores the service data and information transmitted by the base station to the user equipment.

Description of drawings

Fig. 1 is the resource allocation method of the LTE system based on OFDM in the prior art;

FIG. 2 is a resource allocation and control signaling transmission method proposed by the present invention;

Fig. 3 (a) is an example of a kind of resource allocation method proposed by the present invention;

Fig. 3 (b) is an example of a resource allocation control signaling method proposed by the present invention;

Fig. 4 (a) is another example of a kind of resource allocation method proposed by the present invention;

Fig. 4(b) is another example of a resource allocation control signaling method proposed by the present invention.

Detailed ways

The present invention discloses a method for resource allocation and control signaling transmission with reference to accompanying drawing 2, comprising the following steps:

Step 201: Divide the entire system transmission bandwidth B of the above-mentioned base station into G integer groups according to the bandwidth B _g , where

G=B/B _g (1)

Step 202: Divide all the distributed virtual resources into N _DVRBs and divide them into G groups to obtain the respective distributed virtual resources S _g in each group, where

Step 203: Divide each of the above-mentioned distributed virtual resource blocks into the above-mentioned different virtual resource blocks for each of the above-mentioned distributed resources with the number of subcarriers M (for example, M is 25) within each of the above-mentioned distributed resource groups The equally divided part P _{y, j, g} , where

(3)

${\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; -</span>\underset{\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; ,</span>}\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1,2</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; ;</span>\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0,1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ;</span>$

Step 204: Calculate the number of sub-carriers L _g in each virtual distributed resource grouping interval for the different equally divided parts of each distributed virtual resource in each of the above groups, where

Step 205: Determine the number N _PRB of the above-mentioned virtual distributed resource block N _DVRB in the above-mentioned physical resource block

The resource number k corresponding to each of them, where

$\mathrm{<span\; class="notranslate">\; K</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; PRB</span>}}}{\mathrm{<span\; class="notranslate">\; G</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 5</span>}<span\; class="notranslate">\; )</span>$

Step 206: After the above-mentioned calculation of the method of the present invention is completed, it is necessary to map the equally divided part P _{y, j, g} divided by each virtual distributed resource in each of the above-mentioned virtual distributed resource groups to each of the above-mentioned physical The corresponding physical resource number r after (y+j) modulus S _g operation in the group, where

r=(y+j)mod S _g , j=0,1,...,S _g -l; y=0,1,...,S _g -l; g=1,...,G ; (6)

Step 207: The base station transmits the resource allocation information of the user equipment to the user equipment via the physical resource allocation control signaling. After receiving the resource allocation control signaling information, the user equipment can obtain the physical resources allocated by the base station, and from the above Allocate physical resources to restore service data and information transmitted by the base station to the user equipment.

The method for resource allocation and resource allocation control information transmission proposed by the present invention will be described below with reference to the drawings provided in FIGS. 3 and 4 .

An embodiment of the present invention is described with reference to Fig. 3 (a) and (b), it should be noted that the present invention provides following numerical value in the example of the invention is to illustrate the method that the present invention proposes, in no way limits the present invention, Assume that the entire system transmission bandwidth B of the base station is 20MHz, and the bandwidth size of each virtual resource block and physical resource block as described in Table 1 above is 375KHz, which means that the number N _PRB of available physical resource blocks is 48 (icon is 300), its serial number k is 0, 1, ..., N _PRB -1 as shown in Figure 3; and assuming that the number of virtual distributed resource blocks N _DVRB is 25, its serial number i is as shown in Figure 3 0, 1, ..., N _DVRB -1.

Therefore, according to the method of the present invention, at first the entire system transmission bandwidth B of the above-mentioned base station is 20 MHz according to the bandwidth B _g is 5 MHz to be divided into the quantity of G integer groups according to expression (1), it should be noted that the above-mentioned bandwidth B _g It can also be other values, such as 10MHz, and the following description will take B _g as 5MHz as an example:

G = B/B _g = 20/5 = 4

The transmission bandwidth B of the whole system obtained through the above-mentioned steps of the method proposed by the present invention is 20 MHz and divided into G integer groups according to the bandwidth B _g of 5 MHz, which are respectively represented as the first physical resource grouping (the icon is 301) in FIG. 3 , the second physical resource group (the icon is 302), the third physical resource group (the icon is 303), and the fourth physical resource group (the icon is 304), each of the above physical resource groups (301, 302, 303 , and 304) groups respectively correspond to a bandwidth of 5 MHz, which includes 12 physical resources.

Secondly, for the above-mentioned total number of distributed virtual resources N _DVRB is 25 (the icon is 340), it can be divided into G=4 groups according to the expression (2):

${\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; G</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; DVRB</span>}}<span\; class="notranslate">\; -</span>\underset{\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}$

表示取所得结果的整数上界，其计算得到每个分组之内的各自的分布式虚拟资源数量S_g(g＝1，2，...，G)为S₁＝7、S₂＝7，S₃＝7、以及S₄＝4，这意味着将全部分布式虚拟资源数量N_DVRB为25划分为G＝4个分组，其中在第一个分布式虚拟资源分组(图标为341)之内包括S₁＝7个虚拟分布式资源块，在第二个分布式虚拟资源分组(图标为342)之内包括S₂＝7个虚拟分布式资源块，在第三个分布式虚拟资源分组(图标为343)之内包括S₃＝7个虚拟分布式资源块、在第四个分布式虚拟资源分组(图标为344)之内包括S₄＝4个虚拟分布式资源块。Among them, the operator in the above expression (2)

Represents the integer upper bound of the obtained result, which calculates the number of distributed virtual resources S _g (g=1, 2, ..., G) in each group as S ₁ =7, S ₂ =7 , S ₃ =7, and S ₄ =4, which means that the total number of distributed virtual resources N _DVRB is 25 and divided into G=4 groups, among which the first distributed virtual resource group (the icon is 341) Include S ₁ =7 virtual distributed resource blocks, include S 2 =7 virtual distributed resource blocks in the second distributed virtual resource group (icon 342), and include S ₂ =7 virtual distributed resource blocks in the third distributed virtual resource group (the icon is 343 ) includes S ₃ =7 virtual distributed resource blocks, and the fourth distributed virtual resource group (the icon is 344 ) includes S ₄ =4 virtual distributed resource blocks.

Next, in each of the above-mentioned distributed resource groups (341, 342, 343, and 344), each of the above-mentioned distributed virtual resource blocks is respectively assigned to each of the above-mentioned subcarriers whose number M is 25 according to the expression (3). Distributed resources are divided into equally divided parts P _{y, i, g} of the above-mentioned different virtual resource blocks, where y represents the number of distributed resources in each of the above-mentioned distributed virtual resource groups, and j represents each Different equally divided parts of distributed virtual resources, g represents the group number of distributed virtual resources:

${\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; -</span>\underset{\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; ,</span>}\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1,2</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; ;</span>\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0,1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ;</span>$

Subsequently, the different equally divided parts P _{y, j, and g} of each distributed virtual resource in each of the above-mentioned groups are respectively in the above-mentioned first virtual distributed resource group (the icon is 341), the second virtual distributed resource group (the icon is 342), the third virtual distributed resource grouping (the icon is 343), and the number of subcarriers L _g spaced within the fourth virtual distributed resource grouping (the icon is 344) according to the formula (4) respectively calculate:

This means that each virtual distributed resource within the above-mentioned first virtual distributed resource grouping (the icon is 341) is divided into 7 parts P _{y, j, 1} (j=0, 1, . . . , 6) , the number of subcarrier intervals L ₁ of the above-mentioned 7 parts P _{y, j, 1} (j=0, 1, ..., 6) is 1 sub-carrier, and the above-mentioned second virtual distributed resource group (the icon is 342) Each virtual distributed resource within is divided into 7 parts P _{y, j, 2} (j=0, 1, ..., 6), and the above 7 parts P _{y, j, 2} (j=0, 1 , ..., 6) The number of subcarrier intervals _L2 is 1 subcarrier, and each virtual distributed resource in the above-mentioned third virtual distributed resource group (the icon is 343) is divided into 7 parts P _{y, j, 3} (j=0,1,...,6), the number of subcarrier intervals L ₃ of the above seven parts P _y,j,3 (j=0,1,...,6) is 1 subcarrier The carrier, and each virtual distributed resource within the fourth virtual distributed resource group (icon 344) is divided into 4 parts P _{y, j, 1} (j=0, 1, . . . , 3) , the number of subcarrier intervals L ₄ of the above seven parts P _{y, j, 4} (j=0, 1, ..., 3) is 3 subcarriers.

In addition, it is necessary to determine the resource numbers k corresponding to the above-mentioned virtual distributed resource block N _DVRB being 25 and the above-mentioned physical resource block number N _PRB being 48, which can be calculated as follows according to formula (5):

$\mathrm{<span\; class="notranslate">\; K</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; PRB</span>}}}{\mathrm{<span\; class="notranslate">\; G</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; G</span>}$

This means that for the first distributed resource group (icon 341), the second distributed resource group (icon 342), the third distributed resource group (icon 343) and the fourth distributed resource group (the icon is 344) and the number within the corresponding number N _PRB of the above-mentioned physical resource blocks is 48 respectively: the first distributed resource group (the icon is 341) number: k=(1-1)×( 48/4)+1×(0,1,...,6)=0,1,2,3,4,5,6, they are in the first physical resource grouping (icon is 301); Number of two distributed resource groups (the icon is 342): k=(2-1)×(48/4)+1×(0, 1, . . . , 6)=12, 13, 14, 15, 16 , 17, 18, they are in the second physical resource group (the icon is 302); the third distributed resource group (the icon is 343) number: k=(3-1)×(48/4)+ 1×(0,1,...,6)=24,25,26,27,28,29,30, they are in the third physical resource grouping (the icon is 303); the fourth distributed resource Grouping (the icon is 344) number: k=(4-1)×(48/4)+1×(0,1,...,3)=36,39,42,45, they are in the fourth physical within the resource group (the icon is 304).

After completing the above-mentioned calculation of the method of the present invention, in order to make the above-mentioned distributed resources obtain as large a diversity gain as possible in the frequency domain, it is necessary to add The equally divided parts P _{y, j, g} divided by each virtual distributed resource of , are mapped to each physical resource number r in each of the above physical groups (301, 302, 303, 304) according to formula (6):

r=(y+j)mod S _g , j=0,1,...,S _g -1; y=0,1,...,S _g -1; g=1,...,G ;

The equally divided part P _{y, j, g} within each virtual distributed resource group (341, 342, 343, 344) is mapped to each physical resource group (301, 302, 303, 304) according to the above formula (6). The corresponding physical resource numbers in Table 2 are listed in Table 2 (a), (b), (c), and (d). It should be noted that the above-mentioned number r corresponds to the number in each of the above-mentioned physical resource groups, and they The number k corresponding to the entire system bandwidth B within 20 MHz has been described above.

Table 2: The equally divided part P _{y, j, g} within each virtual distributed resource group (341, 342, 343, 344) is mapped to each physical resource group (301, 302, 303, 304) according to the above formula (6) ) within the corresponding physical resource number r

In order to illustrate the above-mentioned steps more clearly, the first virtual distributed resource grouping (341) is used as an example to describe here, and at this moment, there are S ₁ =7 virtual distributed resources in the first virtual distributed grouping (341) , its number y=0, 1, 2, 3, 4, 5, 6; each of the above S ₁ =7 virtual distributed resources will be divided into approximately equal parts j, and its number j=0 , 1, 2, 3, 4, 5, 6; then according to formula (6) calculation can get table 2, for the first 4th in S ₁ =7 virtual distributed resources of the first virtual distributed grouping (341) The results of the mapping of each part of the virtual distributed resource (row 4 of Table 2(a)) are explained as follows, that is, part 0 of the above-mentioned fourth virtual distributed resource will be mapped to the first physical resource group (301) Part 0 of the 4th physical resource (column 1 of Table 2(a)) and part 1 of the 4th virtual distributed resource will be mapped to the 5th part of the first physical resource group (301) Part 1 of the physical resource (column 2 of Table 2 (a)), Part 2 of the 4th virtual distributed resource will be mapped to the 6th part of the 6th physical resource within the first physical resource grouping (301). 2 part (column 3 of Table 2(a)), part 3 of the 4th virtual distributed resource will be mapped to part 3 of the 0th physical resource within the first physical resource group (30 1) ( The 4th column of table 2 (a), the 4th part of the 4th virtual distribution resource will be mapped to the 4th part of the 1st physical resource in the first physical resource grouping (301) (table 2(a) ) of the 5th column), the 5th part of the 4th virtual distribution resource will be mapped to the 5th part of the 2nd physical resource in the first physical resource grouping (301) (the 6th part of Table 2 (a) column), the 6th part of the 4th virtual distributed resource will be mapped to the 6th part of the 3rd physical resource in the first physical resource grouping (301) (column 7 of Table 2(a)).

Referring now to Fig. 3 (b), describe the resource allocation control signaling transmission method corresponding to the above resource allocation method, which is sent by the base station to the user equipment so that the user equipment can obtain its resource allocation control information; according to the above resource allocation method, in the system bandwidth B is that the physical resources within 20 MHz are divided into four physical resource groups, so the above resource allocation control signaling respectively includes the user equipment identification number (370), the first physical resource group allocation signaling (371), the second physical resource Group allocation signaling (372), the third physical resource group allocation signaling (373), and the fourth physical resource group allocation signaling (374); each of the above physical resource group allocation signaling (371, 372, 373 , 374) corresponding to the above-mentioned system bandwidth B being within 20MHz, the physical resources are divided into four physical resource groups; in addition, it should be noted that each of the above-mentioned physical resource group allocation signaling (371, 372, 373, 374) is respectively Including physical resource group occupation identification (381, 386, 391, 396) and resource allocation information (382, 387, 392, 397) in the physical resource group, wherein the physical resource group occupation identification (381, 386, 391, 396) is used To identify whether the user equipment (370) occupies physical resources within the physical resource group, it can use one bit to indicate whether to occupy the physical resource group, wherein the value "0" can be used to indicate that the physical resource group is occupied and the value "" 1" indicates that the physical resource group is not occupied, and each physical resource group allocation control information (382, 387, 392, 397) respectively indicates the physical resource allocated to the user equipment by each physical resource group. It should be noted that the above Physical resource group occupancy identifiers (381, 386, 391, 396) respectively include the number of distributed resources in each physical group (383, 388, 393, 398) and the allocation information of resources in each physical group (384, 389, 394 , 399), wherein the number of distributed resources (383, 388, 393, 398) in each of the above-mentioned physical groups can be obtained by the above-mentioned resource allocation method proposed by the present invention, and the allocation information of resources in each of the above-mentioned physical groups (384 , 389, 394, 399) For this example, the number of resources included in each physical resource group may be 12 bit-mapping (Bit-Mapping) to indicate whether to allocate resources to the above-mentioned user equipment (370).

The base station first adopts the resource allocation method proposed by the present invention to allocate resources to different user equipments, including obtaining physical resource groups (371, 372, 373, 374) where the user equipments are located, setting physical resource group occupation identifiers (381, 386, 391, 396), add the number of distributed resources in the physical resource group (383, 388, 393, 398), add the resource allocation information in the physical resource group (384, 389, 394, 399), etc., and then the base station will The resource allocation information is centrally transmitted to the user equipment through the above-mentioned physical resource allocation control signaling. After receiving the above-mentioned resource allocation control signaling information, the user equipment can obtain the physical resources allocated by the base station, and recover the physical resources allocated by the base station from the above-mentioned allocated physical resources. Transmitted business data and information.

Another embodiment of the present invention is described with reference to Fig. 4 (a) and (b), it should be noted that the following numerical values that the present invention provides in the example of the invention are to illustrate the method proposed by the present invention, and in no way limit the present invention , assuming that the entire system transmission bandwidth B of the base station is 15MHz, as the bandwidth size of each virtual resource block and physical resource block described in the above table 1 is 375KHz, this means that the number N _PRB of available physical resource blocks is 36 ( The icon is 400), and its numbering k is O, 1, ..., N _PRB -1 as shown in Figure 4; and assuming that the number of virtual distributed resource blocks N _DVRB is 25, its numbering i is as shown in Figure 3 0, 1, ..., N _DVRB -1.

Therefore, according to the method of the present invention, at first the whole system transmission bandwidth B of the above-mentioned base station is 15MHz and can be divided into the quantity of G integer groups according to expression (1) according to the bandwidth B _g of 5MHz:

$\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; B</span>}<span\; class="notranslate">\; /</span>{\mathrm{<span\; class="notranslate">\; B</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 15</span>}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 5</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 3</span>}$

The entire system transmission bandwidth B obtained through the above steps of the method proposed by the present invention is 15MH. According to the bandwidth B _g is 5MHz, it is divided into G integer groups, which are respectively represented as the first physical resource group (the icon is 401), the second physical resource group (the icon is 402), and the third physical resource in FIG. 4 Grouping (the icon is 403), each of the above physical resource groups (401, 402, and 403) corresponds to a bandwidth of 5 MHz, and includes 12 physical resources.

Secondly, for all the above-mentioned distributed virtual resources whose number is N _DVRB is 25 (the icon is 440), it can be divided into G=4 groups according to the expression (2):

${\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; G</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; DVRB</span>}}<span\; class="notranslate">\; -</span>\underset{\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}$

表示取所得结果的整数上界，其计算得到每个分组之内的各自的分布式虚拟资源数量S_g(g=1，2，…，G)为S₁=9、S₂=9，以及S₃=7，这意味着将全部分布式虚拟资源数量N_DVRB为25划分为G=3个分组，其中在第一个分布式虚拟资源分组(图标为441)之内包括S₁＝9个虚拟分布式资源块，在第二个分布式虚拟资源分组(图标为442)之内包括S₂＝9个虚拟分布式资源块，在第三个分布式虚拟资源分组(图标为443)之内包括S₃＝7个虚拟分布式资源块。where the operator in the above expression

Indicates the integer upper bound of the obtained result, which calculates the respective distributed virtual resource quantity S _g (g=1, 2, ..., G) in each group as S ₁ =9, S ₂ =9, and S ₃ =7, which means that the total number of distributed virtual resources N _DVRB is 25 and divided into G=3 groups, wherein S ₁ =9 are included in the first distributed virtual resource group (the icon is 441) The virtual distributed resource blocks include S ₂ =9 virtual distributed resource blocks in the second distributed virtual resource group (the icon is 442), and the third distributed virtual resource group (the icon is 443) It includes S ₃ =7 virtual distributed resource blocks.

Next, in each of the above distributed resource groups (441, 442, and 443), each of the above-mentioned distributed virtual resource blocks is respectively assigned to each of the above-mentioned distributed virtual resource blocks with the number of subcarriers whose size M is 25 according to the expression (3). The resource is divided into the equally divided parts P _{y, i, g} of the above-mentioned different virtual resource blocks, where y represents the number of the distributed resource in each of the above-mentioned distributed virtual resource groups, and j represents the number of each distributed resource in each of the above-mentioned groups. Different equally divided parts of virtual resources, g represents the group number of distributed virtual resources:

${\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; -</span>\underset{\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1,2</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; ;</span>\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0,1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ;</span>$

Subsequently, the different equally divided parts P _{y, j, and g} of each distributed virtual resource in each of the above-mentioned groups are respectively in the above-mentioned first virtual distributed resource group (the icon is 441), the second virtual distributed resource group (the icon is 442), and the number of subcarriers L _g spaced within the third virtual distributed resource group (the icon is 443) are respectively calculated according to formula (4):

This means that each virtual distributed resource within the above-mentioned first virtual distributed resource grouping (the icon is 441) is divided into 9 parts P _{y, j, l} (j=0, 1, . . . , 8) , the number of subcarrier intervals L ₁ of the above nine parts P _{y, j, l} (j=0, 1, ..., 9) is 1 subcarrier, and the above second virtual distributed resource group (the icon is 442) Each virtual distributed resource within is divided into 7 parts P _{y, j, 2} (j=0, 1, ..., 9), and the above 9 parts P _{y, j, 2} (j=0, 1 , ..., 8) The number of subcarrier intervals L ₂ is 1 subcarrier, and each virtual distributed resource in the third virtual distributed resource group (icon 443) is divided into 7 parts P _{y , j, 3} (j=0,1,...,6), the number of subcarrier spacing L ₃ of the above seven parts P _y,j,3 (j=0,1,...,6) is 1 subcarriers.

In addition, it is necessary to determine the resource numbers k corresponding to the above-mentioned virtual distributed resource block N _DVRB being 25 and the above-mentioned physical resource block number N _PRB being 48, which can be calculated as follows according to formula (5):

$\mathrm{<span\; class="notranslate">\; K</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; PRB</span>}}}{\mathrm{<span\; class="notranslate">\; G</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; G</span>}$

This means that for the first distributed resource group (the icon is 441), the second distributed resource group (the icon is 442), and the third distributed resource group (the icon is 443), the corresponding physical The number of resource blocks N _PRB is within 36 and the numbers are respectively: the number of the first distributed resource group (the icon is 441): k=(1-1)×(36/4)+1×(0, 1, ..., 8)=0, 1, 2, 3, 4, 5, 6, 7, 8, they are in the first physical resource grouping (icon is 401); the second distributed resource grouping (icon 442) numbering: k=(2-1)*(36/4)+1*(0,1,...,8)=12,13,14,15,16,17,18,19,20 , they are in the second physical resource group (the icon is 402); the third distributed resource group (the icon is 343) number: k=(3-1)×(36/4)+1×(0 , 1, . . . , 6)=24, 25, 26, 27, 28, 29, 30, which are located in the third physical resource group (the icon is 403).

After completing the above-mentioned calculation of the method of the present invention, in order to make the above-mentioned distributed resources obtain as large a diversity gain as possible in the frequency domain, each of the above-mentioned virtual distributed resource groups (441, 442, 443) needs to be The equally divided part P _{y, j, g} divided by the virtual distributed resource is mapped to each physical resource number r in each physical group (401, 402, 403) above according to the formula (6):

r=(y+j) mod S _g , j=0, 1, ..., S _g -1; y = 0, 1, ..., S _g -1; g = 1, ..., G ; The equal parts P _{y, j, and g} within each of the virtual distributed resource groups (441, 442, 443) are mapped to the respective physical resource groups (401, 402, 403) according to the above formula The physical resource numbers r are listed in Table 3 (a), (b), and (c) respectively. It should be noted that the above numbers r correspond to the numbers in the above-mentioned physical resource groups, and they correspond to the entire system bandwidth B as The number k within 15MHz has been explained above.

Table 3: The equally divided part P _{y, j, g} within each virtual distributed resource group (441, 442, 443) is mapped to each physical resource group (401, 402, 403) according to the above formula (6) Corresponding physical resource number r

In order to illustrate the above steps more clearly, the first virtual distributed resource grouping (441) is described here as an example, and at this time there are S ₁ =9 virtual distributed resources in the first virtual distributed grouping (441) , and its number y=0, 1, 2, 3, 4, 5, 6, 7, 8; the above S ₁ = each distributed resource in the 9 virtual distributed resources will be divided into approximately equal parts j, where Numbering j=0, 1, 2, 3, 4, 5, 6, 7, 8; then according to formula (6) calculation can obtain Table 3, for S ₁ =9 of the first virtual distributed grouping (441) The results of the mapping of each part of the fourth virtual distributed resource (row 4 of Table 3(a)) in the virtual distributed resources are explained as follows, that is, part 0 of the above-mentioned fourth virtual distributed resource will be mapped to the first Part 0 of the fourth physical resource (column 1 of Table 3(a)) and part 1 of the fourth virtual distributed resource within the first physical resource group (401) will be mapped to the first physical resource group Part 1 of the 5th physical resource (column 2 of Table 3(a)) and part 2 of the 4th virtual distributed resource within (401) will be mapped to the first physical resource grouping (401) Part 2 of the 6th physical resource (column 3 of Table 3(a)) and part 3 of the 4th virtual distributed resource will be mapped to the 7th part of the first physical resource group (401) Part 3 of the physical resource (column 4 of Table 3(a)), part 4 of the 4th virtual distributed resource will be mapped to the 8th part of the 8th physical resource within the first physical resource grouping (401) 4 parts (the 5th column of table 3 (a)), the 5th part of the 4th virtual distribution resource will be mapped to the 5th part of the 0th physical resource in the first physical resource grouping (301) (table 2(a)'s 6th column), the 6th part of the 4th virtual distributed resource will be mapped to the 6th part of the 1st physical resource in the first physical resource grouping (401) (Table 3(a) Column 7 of ), the seventh part of the fourth virtual distributed resource will be mapped to the sixth part of the second physical resource in the first physical resource group (401) (column 8 of Table 3(a) ), the 8th part of the 4th virtual distributed resource will be mapped to the 8th part of the 3rd physical resource in the first physical resource grouping (401) (column 9 of Table 3(a)).

Referring now to Fig. 4 (b), describe the resource allocation control signaling transmission method corresponding to the above resource allocation method, which is sent by the base station to the user equipment so that the user equipment can obtain its resource allocation control information; according to the above resource allocation method, in the system bandwidth B is that the physical resources within 15 MHz are divided into three physical resource groups, so the above resource allocation control signaling respectively includes the user equipment identification number (470), the first physical resource group allocation signaling (471), the second physical resource Group allocation signaling (472), and the third physical resource group allocation signaling (473); each of the above physical resource group allocation signaling (471, 472, 473,) corresponds to the above-mentioned system bandwidth B within 15MHz The physical resources are divided into three physical resource groups; in addition, it should be noted that each physical resource group allocation signaling (471, 472, 473) includes the physical resource group occupation identifier (481, 486, 491) and the physical resource group respectively. Intra-group resource allocation information (482, 487, 492), wherein the above-mentioned physical resource group occupancy identification (481, 486, 491) is used to identify whether the user equipment (470) occupies physical resources within the physical resource group, and it can use One bit indicates whether to occupy the physical resource group, wherein the value "0" can be used to indicate that the physical resource group is occupied and the value "1" can be used to indicate that the physical resource group is not occupied, and each physical resource group is assigned control information (482, 487, 492) respectively represent the physical resources allocated to the user equipment by each of the above physical resource groups. It should be noted that the above physical resource group occupancy identifiers (481, 486, 491) respectively include the number of distributed resources in each physical group ( 483, 488, 493) and resource allocation information (484, 489, 494) in each physical group, wherein the number of distributed resources in each physical group (483, 488, 493) can be determined by the above-mentioned resources proposed by the present invention obtained by the allocation method, and the resource allocation information (484, 489, 494) in each physical resource group mentioned above can be 12 bit-mapping (Bit-Mapping) to indicate whether the resource quantity included in each physical resource group is Resources are allocated to said user equipment (470).

The base station first uses the resource allocation method proposed by the present invention to allocate resources to different user equipments, including the physical resource groups (471, 472, 473) obtained by the user equipments, and the setting of physical resource group occupancy identifiers (481, 486, 491) , adding the number of distributed resources in the physical resource group (483, 488, 493), adding resource allocation information in the physical resource group (484, 489, 494), etc., and then the base station allocates the resource allocation information of the above user equipment through the above physical resource allocation The control signaling is centrally transmitted to the user equipment. After receiving the resource allocation control signaling information, the user equipment can obtain the physical resources allocated by the base station, and restore the service data and information transmitted by the base station from the allocated physical resources.

Claims (17)

1. A method for resource allocation and resource allocation control information transmission, comprising the following steps: (a) dividing the entire system transmission bandwidth B of the base station into G integer groups according to the bandwidth B _g ; (b) Divide all distributed virtual resources into N _DVRBs and divide them into G groups, and obtain the respective distributed virtual resources S _g in each group; (c) within each distributed resource group, divide each distributed virtual resource block for each distributed resource with the number of subcarriers M into different virtual resource blocks P _{y, j , g} ; (d) The different equally divided parts of each distributed virtual resource within each group are respectively calculated at the number of subcarriers L _g at each virtual distributed resource grouping interval; (e) determining the resource number k corresponding to the virtual distributed resource block N _DVRB within the number N _PRB of physical resource blocks; (f) Map the equally divided part P _{y, j, g} divided by each virtual distributed resource in each virtual distributed resource group to (y+j) modulo S _g operation in each physical group After the corresponding physical resource number r; (g) The base station transmits the resource allocation information of the user equipment to the user equipment through the physical resource allocation control signaling. After receiving the above resource allocation control signaling information, the user equipment can obtain the physical resources allocated by the base station, and from the above The resource restores the service data and information transmitted by the base station to the user equipment. 2. The method according to claim 1, characterized in that said step (a) comprises, calculating G according to the formula: G=B/B _g . 3. The method according to claim 1, wherein step (b) comprises, calculating the distributed virtual resource quantity _Sg according to the following formula:

4. The method according to claim 1, characterized in that step (c) comprises, calculating the equal portion P _{y, j, g} of the virtual resource block according to the following formula:

${\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; -</span>\underset{\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1,2</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; ;</span>\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0,1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ;</span>$ 5. The method according to claim 1, wherein step (d) comprises, calculating the subcarrier quantity L _g of each virtual distributed resource grouping interval according to the following formula:

6. The method according to claim 1, characterized in that step (e) comprises, calculating the resource number k according to the following formula: $\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; PRB</span>}}}{\mathrm{<span\; class="notranslate">\; G</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; S</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; .</span>$ 7. The method according to claim 1, characterized in that step (e) includes, mapping the equally divided part P _{y, j, g} divided by each virtual distributed resource in each virtual distributed resource group The corresponding physical resource number r after (y+j) modulo S _g operation in each of the above physical groups, which is calculated by the following formula: r=(y+j) mod S _g , j=0, 1, ..., S _g -1; y = 0, 1, ..., S _g -1; g = 1, ..., G ;. 8 . The method according to claim 2 , wherein the bandwidth B _g that divides the entire system transmission bandwidth B of the base station is 5 MHz or 10 MHz. 9. The method according to claim 2, wherein the entire system transmission bandwidth B of the base station is divided into a plurality of equal-bandwidth groups. 10. The method according to claim 3, wherein the total number of distributed virtual resources being N _DVRB is also divided into multiple groups. 11. The method according to claim 1, wherein the physical resource allocation control signaling is sent to the user equipment centrally by a base station. 12. The method according to claim 11, wherein the physical resource allocation control signaling is divided into multiple groups. 13. The method according to claim 12, wherein each physical resource group allocation control signaling includes a physical resource group occupancy identifier and resource allocation information within a physical resource group. 14. The method according to claim 13, wherein the physical resource group occupation identifier is used to identify whether the user equipment occupies physical resources within the physical resource group. 15. The method according to claim 14, wherein the physical resource group occupancy identifier uses one bit to indicate whether the physical resource group is occupied, wherein the value "0" can be used to indicate that the physical resource group is occupied and the value "0" can be used "1" indicates that the physical resource group is not occupied. 16. The method according to claim 12, wherein the allocation control information of each physical resource group includes the number of distributed resources in each physical group and the resource allocation information in each physical group. 17. The method according to claim 16, wherein the resource allocation information in each physical group can be represented by a bitmap of the resource quantity in the physical group.

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